Server-side 2026-07-28 stateless support: classifier, driver split, server/discover by maxisbey · Pull Request #2928 · modelcontextprotocol/python-sdk

S2 wave 0: conformance pin, classifier, discover handler, helpers, fixture tool, migration note

maxisbey

committed

S2 waves 1-3: driver-split kernel + two-channel ServerSession + classifier tests

maxisbey

committed

S2 wave 4: modern entry rewrite, Server.run wrapper, test migrations

maxisbey

committed

Client streamable-http: parse JSON-RPC errors from non-2xx response bodies

maxisbey

committed

Testing-standards fixes: hollow-proof, provenance docstrings, constants, assertion patterns

maxisbey

committed

Absorb #2926 (SEP-2577 deprecations); fix client 4xx id-correlation

maxisbey

committed

D8: move method-existence from classifier rung-4 to kernel dispatch

maxisbey

committed

Re-raise MCPError from @mcp.tool() handlers as a top-level JSON-RPC error

maxisbey

committed

T3: interaction-suite additions for modern stateless entry

maxisbey

committed

T5: coverage backfill for S2-added branches

maxisbey

committed

Wave 5b polish + update tests for MCPError re-raise consequences

maxisbey

committed

Route unrecognised protocol-version headers to the modern entry; swap header-mismatch ahead of version-supported

maxisbey

committed

Delete legacy transport's protocol-version validation (now owned by manager era-routing)

maxisbey

committed

C3: remove server-stateless from conformance baselines; C2: TODO-anchor audit

maxisbey

committed

Address review: serve_loop helper, bare 405, INVALID_REQUEST split, migration.md fixes

maxisbey

committed

Address by-construction review: ServerSession reads standalone channel from Connection; hygiene

maxisbey

committed

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Server-side 2026-07-28 stateless support: classifier, driver split, server/discover#2928

Server-side 2026-07-28 stateless support: classifier, driver split, server/discover#2928
maxisbey merged 16 commits into
mainfrom
s2-server-stateless-green

Commits on Jun 20, 2026

S2 wave 0: conformance pin, classifier, discover handler, helpers, fixture tool, migration note

S2 waves 1-3: driver-split kernel + two-channel ServerSession + classifier tests

S2 wave 4: modern entry rewrite, Server.run wrapper, test migrations

Client streamable-http: parse JSON-RPC errors from non-2xx response bodies

Testing-standards fixes: hollow-proof, provenance docstrings, constants, assertion patterns

Absorb #2926 (SEP-2577 deprecations); fix client 4xx id-correlation

D8: move method-existence from classifier rung-4 to kernel dispatch

Re-raise MCPError from @mcp.tool() handlers as a top-level JSON-RPC error

T3: interaction-suite additions for modern stateless entry

T5: coverage backfill for S2-added branches

Wave 5b polish + update tests for MCPError re-raise consequences

Route unrecognised protocol-version headers to the modern entry; swap header-mismatch ahead of version-supported

Delete legacy transport's protocol-version validation (now owned by manager era-routing)

C3: remove server-stateless from conformance baselines; C2: TODO-anchor audit

Address review: serve_loop helper, bare 405, INVALID_REQUEST split, migration.md fixes

Address by-construction review: ServerSession reads standalone channel from Connection; hygiene